Mixing-valve.



w. e. NEWTON.

MIXING VAEVE. 4 APPLICATION FILED DBO. 11, 1912.

Patented Aug. 26, 1913.

3 SHEETS-SHEET 1.

W. G. NEWTON. MIXING VALVE. APPLICATION Hum Bil-10.11, 1912.

1U7145. Patented Aug. 26, 1913' a snnms-snnmz.

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MIXING VALVE. APrLicATmn FILED pm. 11, 1912p ratentea Aug.26,1913.

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35 and cold water are pro-v1 unrrnn STATES, Pa an orrion.

WILLIAM G. Nnwron, or new rnevnn,

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New Haven, in, the county of New. Haven.

5 and; State of Connecticut, have. invente 81 n w a d u eiu mpr v ment n. it us.- Valves; and I dnhereby declare the. following, when taken in connection with the accompanying. drawings and the. characters of t e ul a and exact description of,- the same, and which said drawings constitntepartofi th s pp a o nd; r rr ent.

Figure 1 a. top or plan view. of a mixing valve constructed in accordance with my 111- ventipn. Fig. 2 a side. viewf the same. ig. 3. a view in vertical section. F g, 4 a sectional. view showing thevalve partly open. for the. passageof cold water.

scharg of m. Wa erv View showing the valve. open for the (1181 change. t hot water. Fig. 7 a sectional e n t ine underside view oi the yoke with. two of the 3o This invention relates to animprovement inv mixing valves, and particularlyto valves by wlliQh. provision made. for limitingthe dischar e. oi hot. water with relation to cold.

'ded, provision. must be made to. so temperthe hot water that theperson, using it will not be scalded.- It is apparent that the. nearer the boiler the. hotter the water, and

These valves are usually provided with. an indicating, for limiting, the. movement of the valve. ,The. object of. this invention is a simple arrangement of parts whereby the. limit. for

the opening of the valve may beset, and when set is not likely to be tampered wlth; and the invention consists in the construction and combination oi parts hereinafter described and particularly recited in the claims.

In carrying out my invention, I employ valve body 2 having a cold water inlet 3 at one side and a hot water inlet 4 at the 65 opposite side, and with the usual outlets 5 Fig. 5.- 20 shows the. v lve stilbfiurther open for the. Fig.3 a similarn hotels and other-places where. hot

consequently the 40 more. cold. will be required to temper it. responding.

that the handle maybe locked with thestem handleand. provision. is made.

.stem. by a set screw 33. .the hub is provided with a 'wliich is in position toengage with the stop and; The. cold water inlet chamber 7 is separated from the hot water inlet 8 by a wall 9, and. opening from the. chamber 7 is a port 10, and opening. from the chamber 8 is a port 1-1. These are controlled, respectively by' valves, 12 and 13 extending downward from, a yoke 14 having a socket 15 provided with inwardly projecting pins 17 with which. threads 18 on the valve stem 19- engage, In lieu of the socket provided with. pins, "a socket provided with interior screw threads for enga ement with the screw threads 18 might be provided. The upper portion of the casing in which the yoke stands. I term a mixing chamber 20 the open upper end of which is closed by a bonnet 21' containing a stufling box 22 throu. which, the valve stem 19 extends.

per endof the bonnet is provided with'ex ternal threads 23, and the inner wall at the outer end has a bevel 24 to receive the beveledlowerend 25 ofa ring 26 which is firmly connected at its outer end with a cap 27. which carries on its upper face a stud or pin 28. Surrounding the upper end of the bonnet and engaging with the threads 23 1s a clamping collar 38 having an inwardly extending flange 39 which engages witha shoulder 40 on the ring and so that by turning the clamping collar onto the bonnet the ring will be crowded into the upper end of; the. bonnet and be frictionally held against turning. ,In this way the stop pin 28 is located at the. desired point. The upper end of-the stem 19 is formed with a se- .ries of beveled ribs 30 of the operatin 29 over which the hub handle 31 extends, the inner surface-of t is hub being provided with depressions formed by the ribs 32 cortothe ribs 29 on the stem so ,at various, points of adjustment. 7 The hub is prevented from liftin away from the The inner face of shoulder 41- pin 28. As usual in valves of this construction the valve 12 closing the port 10 is of PatentedAugQZQ 1913.

The up.-

web-like. character, but the upper end 3 1 i has a cylindrical portion which closely fits the'port 10 and is adapted at its lower end ito also close the port. While the valve 13 has a cylindrical portion made longer than that of the valve 12 so that the port 11 will not be opened until after the port 10 has been opened to a certain degree and will remain open when the port 10 is closed by the lower end of the valve 12 Surrounding the upper end of the casing is a dial 35 which is secured in place by screws 36 extending into lugs 37 projecting outward from opposite sides of the casing.

To adjust the valve, the clamping collar will be loosened so that the ring with its cap may be freely turned. Water of maximum heat being ready for delivery, the operating handle is turned to open the hot' water valve 13 to the desired extent. In thus opening the valve the shoulder 41 engages with the stop pin 28 and hence moves the cap and ring with it; and when a suflicient degree of hot water is obtained the clamping collar 38 will be turned down so as to crowd the ring into the bonnet and lock it against rotation. The stop pin is thus located so as to prevent the turning of the handle beyond a fixed point, and so that the extent to which the hot water valve may be raised is determined. If at any time conditions change or the valve is used in another place, it is only necessary to loosen the clamping collar and adjust the ring and cap so that the pin 28 will stand in proper position to arrest the movement of the operat ing handle. The means for locking the ring will not be readily understood by anyone not familiar with it so that the valve will not be tampered with by unoflicial persons. In first opening the valve the port 10 opens first so that cold water may bedischarged. Further opening of the valve will gradually open the hot water so that the mixture of hot and cold or warm water will be discharged. The continued movement of the valve will increase the opening for the hot Water and gradually close the port for cold I water so that hot water will be discharged,

the temperature of the hot water being regulated by the amount of cold water admitted with it. The purpose of the valve as before stated. is to prevent water of a very high degree being discharged.

1.' In a mixing, valve, the combination with a casing having inlet chambers, a mixing and outlet chamber connected with the inlet chambers by ports, valves adapted to open and close said ports, said valves car-.

ried by a valve stem, a bonnet through which the valve stem passes, a ring entering the upper end of the bonnet, a cap secured to said ring and around the valve stem, a collar for locking the cap and ring with the bonnet, an operating handle attached to the valve stem, :1 fixed stop on the cap in the path of the handle for arresting the to open and close said ports, said valves con-' nected with a valve stem, a bonnet through which the valve stem projects, a stuffing box around the valve stem in said bonnet, a ring entering the upper end of the bonnet, a

clamping collar for connecting the ring to the bonnet, said ring carrying a stop pin, an operating handle attached to the valve stem, and a shoulder on the handle adapted to engage with said stop pin, whereby the movement of the handle is arrested.

3. In a mixing valve, the combination with a casing, a valve stem extending upward beyond the casing, a bonnet secured to the casing around said stem, a clamping collar having threaded connection with the upper end of said bonnet, a beveled ring entered into" the upper end of the bonnet and engaged by said collar whereby the ring may be locked to the bonnet, said ring carrying a stop pin, an operating handle Se cared to the upper end of the stem and formed with a shoulder adapted to engage with said stop pin whereby the movement of the handle is limited.

4. In a mixing valve, the combination with the casing, of a bonnet secured to the casing, a valve stem extending through said bonnet, a stuffing box around said valve stem within said bonnet, a beveled ring adapted to be crowded into the outer end of 'said bonnet, a cap connected with said ring the said cap carrying a stop pin, a clamping collar surrounding the outer end of the bonnet and adapted to crowd the ring into the bonnet, an operating handle secured to the outer end of the valve stem and provided with a shoulder adapted to engage with said stop pin whereby the movement of the operating handle may be arrested.

5. A stop for mixing valves comprising a collar adapted to be screwed on a bonnet,

and a stud-carrying member rotatably mounted on the said collar and adapted to be locked to the bonnet by said collar.

In testimony whereof, I have signed. this specification in the presence of two subscribing witnesses.

WILLIAM G. NEWTON. Witnesses:

T. S. COLEMAN, E. A. WRIGH 

